<?php
 trait  Hello  {
    public function  sayHello () {
        echo  'Hello ' ;
    }
}

trait  World  {
    public function  sayWorld () {
        echo  'World' ;
    }
}

class  MyHelloWorld  {
    use  Hello ,  World ;
    public function  sayExclamationMark () {
        echo  '!' ;
    }
}

 $o  = new  MyHelloWorld ();
 $o -> sayHello ();
 $o -> sayWorld ();
 $o -> sayExclamationMark ();
 ?> 